Water-heater.



IPATENTED MAY 17, 1904. M. SOHAAUKL 7 WATER HEATER. APPLICATION FILEDSEPT. 21. 1903.

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UNITED STATES fratentea May 17, 1904.

PATENT OFFICE.

MICHEL SCI-IAAOK, OF CHICAGO, ILLINOIS;

WATER-HEATER.

SPECIFICATION forming part of Letters Patent N0. 760,351, dated May 17,1904, Application filed $eptember 21, 1908. Serial No. 174,059. (Nomodel.)

.clare the following to be a full, clear, and exact descriptlon of thelnvention, such as will onable others skilled in the art to which itappertains to make and use the same.

My invention relates to a novel construction in a water-heater, theobject being to provide .asimple and efficient device of this characterin which all heat is absorbed by the water; and it consists in thefeatures of construction and combinations of parts hereinafter fullydescribed and claimed.

In the accompanying drawings, illustrating .my invention, Figure 1 is acentral vertical section of a heater constructed in accordance with myinvention. Figs. 2 and 3 are transverse sections of same on the lines 22 and 3 3, respectively, of Fig. 1.

Referring now to said drawings, A indicates the grate, and B theash-pit, of the heater,

said grate being fed either through the firedoor C or through thecentral self-feeding chamber I). Said grate A is suitably supported,preferably on a level with the upper end of an annular water-chamber E,which is supported on the. base or ash-pit B. Resting upon saidwater-chamber E is an annular water-chamber F, composed of fourquarter-sections and which is of larger diameter at its lower than atits upper end and longitudinally corrugated on its inner surface, thelower end being rendered flaring or funnel-shaped. Extending centrallythrough said annular waterchamber F is the annular water-chamber G, thecentral opening D of which forms the selffeeding coal-cl1amber. The saidchamber G is snugly fitted, so that the inner ends of the corrugationsof the upper portion of the chamber F lie in contact therewith, therebyforming a series of vertical flues H in the interstices between saidcorrugations. Supported above and around said chamber F is a fourthannular water-chamber I, which consists of a cylindrical vessel composedof four quarter-sections and vertically corrugated on its inner face,while at its upper end it is provided with an annular inward extensionJ, overlapping the chamber F, so that between the upper end of thelatter and said annular extension J an annular flue K is formed. Thesaid chamber G is provided at its upper end with an outwardly-extendingannular extension L, which projects over and rests upon the saidextension J of the chamber 1. The corrugations of the said chamber I liein contact at their inner ends with the outer wall of the upper portionof the chamber F, thereby forming vertical fines M. In said annularextension J, I provide openings N, communieating with said fines M andthrough which the latter are cleaned. The saidcorrugations of saidchamber I terminate at a point above the lower end of the latter, so asto leave a free annular space or flue 0 between said chambers F and land above an annular water-chamber 1 below said chamber and surroundingthe chamber F, said chamber P being cylindrical and provided at itsupper end with an annular inward extension, the latter being providedwith a vertical recess Q at one point, which forms a flue for thepassage of gases from the fine 0 to the annular flue R below saidannular extension of said chamber P and above the enlarged lower end ofthe chamber F. The chamber P does not rest upon the said enlarged lowerend of the chamber F, so that an annular opening is left between theformer and the latter, which is closed by a ring S. Covers T areprovided for the openings N to prevent the escape of the fire-gasesthrough the same.

A vertical chimney-flue U is connected at its lower end with the annularflue O and also with the annular flue K, the latter connection beingeffected by a pipe V, provided with a damper W and passing through aradial opening in the chamber I.

\Vater is introduced into said heater through the pipe at, entering thechamber P, and from the latter is distributed to the remainingwater-chambers, said chamber P being connected with each of the sectionsof the chamber I by means of pipes Z) and with the lowermost annularwater-chamber E by means of the pipe 0. Said water-ehamber E isconnected with the lower end of each of the quartersections of thewater-chamber F by means of pipes (Z, and each of said sections of saidchamber F is connected by horizontal pipes with the lower end of thechamber G and by means of pipes f with the upper annular extension L ofsaid chamber G, and the latter is connected, by means of pipes g, withthe servicepipes of the building.

In operation my device is as follows: The products of combustion passupwardly through the flues H to the annular flue K and if the damper Wis open will pass thence directly into the chimney-flue U, said damperbeing opened only when starting the fire in order to promote goodcombustion. Upon closing said damper IV said products of combustion willpass downwardly through the flues M to the annular flue O, thencethrough the recess Q, which is located at a point diametrically oppositethe chimney-flue, to the flue R, and thence into said chimney-flue.

The surfaces of the main water-chambers are corrugated to increase theheating-surface.

The chamber P may be termed a feed-water heater, for the reason that thewater therein contained absorbs only the little heat remaining in theproducts of combustion and is then distributed to the remainingwater-chambers.

By forming the larger annular water-chambers of'a plurality of sectionsI am enabled to build the heater more cheaply by reason of the greaterease of casting such sections, and transportation and setting up of theheater is also rendered far more easy by reason of the lighter weight,and consequent comparative ease of handling, of all parts and the factthat the same can be easily brought into the building without thenecessity of enlarging the entrance for this purpose.

This heater has also proved very eflicient, inasmuch as all heat of theproducts of cornbustion is utilized and no waste occasioned.

I claim as my invention 1. A water-heater comprising a furnace, a mainannular water-chamber above and around said furnace having a flaringlower end portion and cylindrical upper end portion, concentricwater-chambers disposed inwardly and outwardly of the cylindricalportion of said main water-chambers, vertical corrugations on the wallsof said water-chambers lying practically in contact with the walls ofthe adjacent water-chambers, the interstices between said corrugationsforming vertical flues on opposite sides of said water-chamber, anannular flue above the latter communicating with said vertical flues,connection between the outermost vertical flues and a chimney-flue atthe lower ends of said vertical flues, and water connections betweensaid various water-chambers, substantially as described.

2. In a water-heater, the combination with a furnace and a main annularwater-chamberabove and around said furnace, of an annular water-chamberfitting within said main waterchamber, the central passage of the latterforming a fuel-feed chamber for said furnace, vertical flues betweensaid main and inner water-chambers, an annular flue above said mainwater-chamber, an annular water-chamber surrounding said mainwater-chamber, vertical flues between said last-named water-chamber, alower annular flue with which said lastnamed vertical flues connect,connections between said lower and upper annular flues and achimney-flue, and a damper interposed in the upper connection.

3. In a water-heater, the combination with a furnace and a main annularwater-chamber above and around said furnace, of an annular water-chamberfitting within said main waterchamber, the central passage of the latterforming a fuel-feed chamber for said furnace, vertical flues betweensaid main and inner waterchambers, an annular flue above said mainwater-chamber, an annular water-chamber surrounding said mainwater-chamber, vertical flues between said last-named water-chambers, alower annular flue with which said last-named vertical flues connect, anannular water-chamber below last-named annular flue, athird annular flueabove said last-named water-chamber, an opening through the latterconnecting said lower annular flues, connections between the lowermostand uppermost annular flues and a chimney-flue,and a damper interposedin the connection between said uppermost annular flue and saidchimney-flue.

4. In a water-heater, the combination with aheating chamber or furnace,of a plurality of concentrically-disposed water-chambers connected witheach other, said water-chambers having corrugations in their walls theinterstices of which form vertical flues, annular flues connecting withsaid vertical flues and with a chimney-flue, and a damper interposed inone of said connections.

5. In a water-heater, the combination with a heating chamber or furnace,of a main annular water-chamber surrounding said furnace and extendingabove the same, a plurality of concentrically-disposed water-chambersinwardly and outwardly of said main water-chamber, corrugations in thewalls of said water-chambers adapted to divide the annular spacesbetween the same into parallel vertical flues, an annular flue abovesaid main waterchamber adapted to receive the products of combustionfrom the inner vertical flues, connection between said annular flue anda chimney, a second annular flue below surrounding said mainwater-chamber between its ends and communication with said first-namedannular flue through the outer series of vertical flues, and connectionbetween said last-named annular flue and said chimney-flue.

6. In a water-heater, the combination with a heating chamber or furnace,of a main an- ."nular water-chamber surrounding said furnace andextending above the same, a plurality of concentrically-disposedwater-chambers inwardly and outwardly of said main water-chamber,corrugations in the walls of said water-chambers adapted to divide theannular spaces between the same into parallel vertical fines, an annularflue above said main waterchamber adapted to receive the products ofcombustion from the inner vertical flues, connection between saidannular flue and a chimney, a second annular flue below surrounding saidmain water-chamber between its ends and communication with saidfirst-named an nular flue through the outer series of vertical flues, athird annular flue below said second flue, a water-chamber interposedbetween said MICHEL SCHAACK.

Witnesses:

RUDOLPH WM. Lo'rz, F. SCIILOTFELD.

